The Retro Synth LFO (Low Frequency Oscillator) is a multiwaveform, polyphonic modulation generator that modulates each voice, or note you play, individually. It can be used as a source for multiple modulation targets.
Retro Synth also provides a dedicated Vibrato LFO for pitch modulation.
Although they are oscillators, LFOs are not audible—but their effects can certainly be heard. The sole purpose of an LFO is to modulate other sound generating elements of the synthesizer.
LFO/Vibrato tabs: Change between LFO and Vibrato parameter panes.
Waveform display: Click the buttons at the top of the display to independently choose an LFO or Vibrato waveform.
The sawtooth waves are suitable for bubbling, rhythmic effects.
The triangle wave is suitable for vibrato and other evenly-modulated effects.
The rectangular waves switch between two values, which is useful for stepping the oscillator pitch by a fifth, for example.
LFO Sync switch: Turn on to synchronize the modulation speed with the host tempo. Turn off to control the modulation speed manually.
Rate slider: Independently set the maximum LFO or Vibrato speed.
Source pop-up menu: By default, your MIDI keyboard modulation wheel changes the LFO or Vibrato speed (Rate slider). Choose Mod Wheel, Aftertouch, or Modwheel + Aftertouch to control the Rate parameter.